December 2, 2016

E-Root's and G-root's IPv6 addresses have been published to the root zone, 
E-Root: 2001:500:a8::e on August 25, 2016 and G-Root: 2001:500:12::d0d on 
October 20, 2016.  E-Root and G-Root are now able to answer both IPv4 and
IPv6 queries, fulfilling RFC 7720's requirement, "MUST support IPv4 [RFC791] 
and IPv6 [RFC2460] transport of DNS queries and responses.  

This accomplishment now makes all 13 root name server letters able to 
support IPv4 and IPv6 queries and responses.

Ryan Stephenson, G-root